Description
Sinn U15
Model: 1025.010
Maritime history on your wrist – After 200,045 nautical miles, reborn as a watch.
- Limited to 1,000 pieces
- Case made of high-strength, seawater-resistant German submarine steel from the decommissioned U 15 submarine, satinised
- Bezel with TEGIMENT Technology and therefore especially scratch-resistant
- Captive diver’s bezel with minute ratcheting
- Tested based on European diving equipment standards and certified by an independent institute
- Water-resistant and pressure-resistant to 500 m diving depth (= 50 bar), certified by an independent institute
- Crown at 4 o’clock to prevent pressure on the back of the hand
- Sapphire crystal
- Low pressure resistant
200,045 nautical miles in 36 years – a proud legacy
Commissioned in 1974, submarine U 15 achieved an impressive record: 200,045 nautical miles, meticulously documented by a former crew member. This astonishing figure equals about ten journeys around the globe! After its decommissioning, Sinn Spezialuhren acquired material from the submarine’s outer hull, using it to craft the heart of a unique, limited-edition diving watch. Limited to 1,000 pieces, the watch case is made from high-strength, seawater-resistant steel sourced directly from the U 15 submarine. This makes the submarine not only the namesake of model U15 but also an exclusive material source—and a timeless link to an unforgettable era in German submarine history.
Anniversary: 20 years of diving watches made of German submarine steel
Sinn Spezialuhren has a special, long-standing relationship with submarines. The company has been using German submarine steel for its diving watches for two decades – convinced by its exceptional performance. The special grade of steel developed by ThyssenKrupp for the outer hulls of the Type 206 submarine and the world’s latest non-nuclear Type 212 submarines has formed the basis of all of our U series since 2005. It is supplied as a semi-finished product with the required dimensions and structural properties and is therefore free of any signs of use.
Maritime history on your wrist
The steel of model U15 sets itself apart in one key aspect: this base material had previously clocked up decades of naval use, and that’s what makes it so special! The professional, meticulously intricate finishing by the Saxony-based watchmaking technology company Sächsische Uhrentechnologie GmbH Glashütte (SUG) ensures that it meets stringent requirements without losing its true identity. The result is a diving watch forged from history, bringing the very soul of naval tradition to the wrist. Adding to this is an engraved steel blank from the original submarine U 15, included with the watch.
All eyes on the high-gloss dial
The U15’s anti-reflective sapphire crystal guarantees exceptional clarity and provides an optimal view of the high-gloss dial, which echoes the mesmerizing blue nuances of the ocean.
The dark bluish-green base tone portrays the vast expanse of the open sea from a depth of around thirty metres, alluding to the operating range of the U 15 submarine, which was capable of diving to depths of up to 100 metres.
Stylised air bubbles that symbolize rising air create a three-dimensional effect with metallic blues and greens. This variance brings a unique touch to the dial and captures the eye with an intriguing stereoscopic effect.
As a historical memoir of submarine prowess, the dial features the number of nautical miles travelled and the U 15’s type designation. The case back is adorned with a matching silhouette of the Type 206 submarine. The U15 has been tested according to European diving equipment standards and certified by an independent institute, ensuring its durability and reliability.
Technical Details
Mechanical Movement
• Model: SW300-1
• Self-winding mechanism
• 25 bearing jewels
• 28,800 semi-oscillations per hour
• Seconds stop function
• Anti-magnetic as per DIN 8309
Case
• Case made of German submarine steel from the decommissioned submarine U 15, satinised
• Diver’s bezel made of German submarine steel from the decommissioned submarine U 15, satinised/polished
• Sapphire crystal in front, anti-reflective on both sides
• Case back screw-fastened
• Crown screwable
• Meets the technical requirements for water-resistance, as set out in standard DIN 8310
• Water-resistant and pressure-resistant to 500 m diving depth (= 50 bar), certified by an independent institute
• In accordance with the technical demands for the German diving norm DIN 8306
• Tested based on European diving equipment standards EN 250 / EN14143 and certified by an independent institute
• Low pressure resistant
Functions
• Hours, minutes, seconds
• Date display
• Diver’s bezel with minute ratcheting and luminous key mark
• SINN Technologies:
– Bezel with TEGIMENT Technology, therefore especially scratch-resistant
– Captive bezel
Dimensions and Weight
• Case diameter: 41 mm
• Band lug width: 20 mm
• Case thickness: 11.2 mm
• Weight without strap: 74 gramme
Dial and Hands
• Dial: blue-green
• Indices coated with luminescent colour
• Hour, minute, and second hands coated with luminescent colour
